7*2b=14b
<span>5a³b×4b³=20a³b^4</span>
<span>-0.2a*5b=-ab</span>
-4a*6b=-24ab
1)4х+2>20, x>4,5.Ответ:(4,5+бесконечности).
<span>8x³-12x²y+6xy²-y³+12xy+3y² = (2х-у)³+3у(4х+у)</span>
Х>х^3
х-х^3>0
х(1-х^2)>0
х(1-х)(1+х)>0
х(х-1)(х+1)<0
х є (-1;0) U (1; +∞)
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